Flared End Brush, Product Type Flared End Brush, Quick Change System Not Applicable, Bristle Type Crimped Wire, Bristle Material Carbon Steel, Brush Dia. 2 in, Wire Dia. 0.01 in, Bristle Length 1 1/8 in, Grit Not Applicable, Overall Length 2 1/8 in, Compatible Tool Type Straight Grinder, Drill Press, Impact Driver, Pencil Grinder, Color Not Applicable, Connector Type Shank, Connector Size 1/4 in, Operating Speed - Maximum 15,000 RPM, Series Gemini